Engineering Papers⌕ Search

Engineering topics

Desai, U. D.

Publications and source records attributed to Desai, U. D..

At least 73 records · Page 4
All sourcesNASA NTRSDOE OSTI
NASA NTRS1973

Energy spectra of cosmic gamma-ray bursts

Detailed differential energy spectra from gamma ray bursts obtained by IMP-6 are presented. Observations cover times of occurance, photon flux, and temporal and spectral characteristics.

Cline, T. L.↗
NASA NTRS1972

An all-sky X-ray monitor for the UK-5 satellite.

An X-ray imaging system using a pin-hole camera and a position sensitive proportional counter at the image plane has been designed for an all-sky X-ray monitor for UK-5 satellite. This high-sensitivity device with real-time coverage of the entire celestial sphere would aid in programming satellite maneuvers such that transient events in the X-ray sky could be investigated in detail by the other primary satellite experiments. Discussion of design criteria for the camera geometry, the position sensitive proportional detector, and electronics to handle the data is presented in this paper.

Desai, U. D.↗
NASA NTRS1971

Unusual cosmic ray intensity decrease of 18 December 1965

A higher than normal ratio is reported for the decrease of cosmic ray intensity on 18 December 1965. This value was attributed to the depletion of a low rigidity electron component which also contributes to the counting rate of the IMP 3 detector. Significant difference is observed in the onset times recorded by the IMP 3 detector and Alert neutron monitor.

Desai, U. D.↗
NASA NTRS1970

2-20 keV X-ray sky background

Diffuse background of 2-20 keV X rays over Scorpius to North Galactic Pole sky band by rocket measurements

Boldt, E. A.↗
NASA NTRS1969

2-20 kev X-ray sky background

Spectral index for diffuse X ray sky background within specific band determined from rocket observations with wide angle telescope

Boldt, E. A.↗